Question

Which of the following compounds have the same no. of lone pairs with their central atom?
[I]$ XeF _{5}^{-}$
[II] $BrF _{3}$,
[III] $XeF _{2}$
[IV] $H _{3} S ^{+} $
[V]Triplet Methylene

• A. IV and V
• B. I and III
• C. I and II
• D. II, IV and V

Answer 1

Answer: (C)

$XeF _{5}^{-}: 2$ lone pairs ; pentagonal planar

$BrF _{3}: 2$ lone pairs ; Bent-T-shape

$XeF _{2}: 3$ lone pairs ; Linear

$H _{3} S ^{+}: 1$ lone pairs ; Pyramidal

$\overset{\uparrow\uparrow}{C}H_2 : 2$ unpaired ; Linear

(No lone pair)